Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September denotes a minimal variation in the average high-temperature to a still hot 31.3°C (88.3°F) from August's 30.6°C (87.1°F). An average low-temperature of 22.4°C (72.3°F) is recorded in the month of September.Heat index
During September, the heat index is appraised at a scorching 41°C (105.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 78%.Rainfall
In Srengsem, Indonesia, in September, during 16.3 rainfall days, 48mm (1.89") of precipitation is typically accumulated. Throughout the year, there are 296.2 rainfall days, and 1712mm (67.4") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 05:58 and sunset at 17:58. On the last day of September, sunrise is at 05:43 and sunset at 17:53 WIB.
Sunshine
With an average of 9h of sunshine, September has the most sunshine of the year.UV index
February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 7 in September interprets into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What are the least humid months?
What is the average humidity in September?
How many days does it rain in September in Srengsem?
How many hours of daylight does Srengsem have in September?
What time are sunrise and sunset in September?
What month has the most sunshine?
How many hours of sunshine does Srengsem have in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Srengsem, Indonesia
- Average high temperature in September: 31.3°C
The warmest month (with the highest average high temperature) is October (31.5°C).
The months with the lowest average high temperature are January and July (30.3°C).
- Average low temperature in September: 22.4°C
The months with the highest average low temperature are April and December (23.5°C).
The coldest month (with the lowest average low temperature) is August (21.9°C).
Average pressure in September
Srengsem, Indonesia
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Srengsem, Indonesia
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is October (6.8km/h).
The calmest month (with the lowest average wind speed) is May (5km/h).
Average humidity in September
Srengsem, Indonesia
- Average humidity in September: 78%
The months with the highest relative humidity are February, March and May (84%).
The months with the lowest relative humidity are September and October (78%).
Average rainfall in September
Srengsem, Indonesia
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is January (240mm).
The driest month (with the least rainfall) is August (42mm).
Average rainfall days in September
Srengsem, Indonesia
- Average rainfall days in September: 16.3 days
The month with the highest number of rainy days is January (29.8 days).
The month with the least rainy days is September (16.3 days).
Average daylight in September /
Average sunshine in September
Srengsem, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is September (Average sunshine: 9h and 0min).
The month with the least sunshine is June (Average sunshine: 6h and 24min).
Average sunshine days in September
Srengsem, Indonesia
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is August (10.9 days).
The months with the least sunshine days are January and February (0.4 days).
Average UV index in September
Srengsem, Indonesia
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover in September
Srengsem, Indonesia
- Average cloud cover in September: 32
The months with the most cloud cover are January and December (Cloud cover 52).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in September
Srengsem, Indonesia
- Average visibility in September: 9km
The months with the highest visibility are September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July and August (8km).
